mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-25 14:10:43 +00:00
366aad4d97
In (first) breaking and (then) fixing the rkspi tool, I realised that the calculation of the required padding (for the header-size and the 2K-in-every-4K SPI layout) was not as self-explainatory as it could have been. This change rewrites the code (using new, common functions in rkcommon.c) and adds verbose in-line comments to ensure that we won't fall into the same pit in the future... Tested on the RK3399 (with has a boot0-style payload) with SD/MMC and SPI. Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com> Acked-by: Simon Glass <sjg@chromium.org>
96 lines
3 KiB
C
96 lines
3 KiB
C
/*
|
|
* (C) Copyright 2015 Google, Inc
|
|
* Written by Simon Glass <sjg@chromium.org>
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0+
|
|
*/
|
|
|
|
#ifndef _RKCOMMON_H
|
|
#define _RKCOMMON_H
|
|
|
|
enum {
|
|
RK_BLK_SIZE = 512,
|
|
RK_INIT_OFFSET = 4,
|
|
RK_MAX_BOOT_SIZE = 512 << 10,
|
|
RK_SPL_HDR_START = RK_INIT_OFFSET * RK_BLK_SIZE,
|
|
RK_SPL_HDR_SIZE = 4,
|
|
RK_SPL_START = RK_SPL_HDR_START + RK_SPL_HDR_SIZE,
|
|
RK_IMAGE_HEADER_LEN = RK_SPL_START,
|
|
};
|
|
|
|
/**
|
|
* rkcommon_check_params() - check params
|
|
*
|
|
* @return 0 if OK, -1 if ERROR.
|
|
*/
|
|
int rkcommon_check_params(struct image_tool_params *params);
|
|
|
|
/**
|
|
* rkcommon_get_spl_hdr() - get 4-bytes spl hdr for a Rockchip boot image
|
|
*
|
|
* Rockchip's bootrom requires the spl loader to start with a 4-bytes
|
|
* header. The content of this header depends on the chip type.
|
|
*/
|
|
const char *rkcommon_get_spl_hdr(struct image_tool_params *params);
|
|
|
|
/**
|
|
* rkcommon_get_spl_size() - get spl size for a Rockchip boot image
|
|
*
|
|
* Different chip may have different sram size. And if we want to jump
|
|
* back to the bootrom after spl, we may need to reserve some sram space
|
|
* for the bootrom.
|
|
* The spl loader size should be sram size minus reserved size(if needed)
|
|
*/
|
|
int rkcommon_get_spl_size(struct image_tool_params *params);
|
|
|
|
/**
|
|
* rkcommon_set_header() - set up the header for a Rockchip boot image
|
|
*
|
|
* This sets up a 2KB header which can be interpreted by the Rockchip boot ROM.
|
|
*
|
|
* @buf: Pointer to header place (must be at least 2KB in size)
|
|
* @file_size: Size of the file we want the boot ROM to load, in bytes
|
|
* @return 0 if OK, -ENOSPC if too large
|
|
*/
|
|
int rkcommon_set_header(void *buf, uint file_size,
|
|
struct image_tool_params *params);
|
|
|
|
/**
|
|
* rkcommon_need_rc4_spl() - check if rc4 encoded spl is required
|
|
*
|
|
* Some socs cannot disable the rc4-encryption of the spl binary.
|
|
* rc4 encryption is disabled normally except on socs that cannot
|
|
* handle unencrypted binaries.
|
|
* @return true or false depending on rc4 being required.
|
|
*/
|
|
bool rkcommon_need_rc4_spl(struct image_tool_params *params);
|
|
|
|
/**
|
|
* rkcommon_rc4_encode_spl() - encode the spl binary
|
|
*
|
|
* Encrypts the SPL binary using the generic rc4 key as required
|
|
* by some socs.
|
|
*
|
|
* @buf: Pointer to the SPL data (header and SPL binary)
|
|
* @offset: offset inside buf to start at
|
|
* @size: number of bytes to encode
|
|
*/
|
|
void rkcommon_rc4_encode_spl(void *buf, unsigned int offset, unsigned int size);
|
|
|
|
/**
|
|
* rkcommon_vrec_header() - allocate memory for the header
|
|
*
|
|
* @params: Pointer to the tool params structure
|
|
* @tparams: Pointer tot the image type structure (for setting
|
|
* the header and header_size)
|
|
* @alignment: Alignment (a power of two) that the image should be
|
|
* padded to (e.g. 512 if we want to align with SD/MMC
|
|
* blocksizes or 2048 for the SPI format)
|
|
*
|
|
* @return bytes of padding required/added (does not include the header_size)
|
|
*/
|
|
int rkcommon_vrec_header(struct image_tool_params *params,
|
|
struct image_type_params *tparams,
|
|
unsigned int alignment);
|
|
|
|
#endif
|